Indicator for type-writing machines.



No. 869,832, PATENTEDDGI'J 29, 1907.

H. A. DBWING.

INDICATOR FOR TYPE WRITING MACHINE 8. APPLICATION FILED In. 31. '1901.

wlrlvEssts H. A; DEWING.

INDICATOR FOR TYPE WRITING MACHINES.

' APPLIOATIOK rum: ms. 31. 1901.

PATENTBD OCT. g9. 1907.

2 SHEETS-SHEET 2.

WITNESSES ATTORNEYS E of the typewriting machine.

UNITED STATES PATENT QFFICE.

INDICATOR FOR TYPE-WRITING MACHINES.

Specification of Letters Patent.

Patented Oct. 29, 1907- Application filed January 31; 1907. Serial No. 354.997-

To all whom it may concern:

Be it knownthat I, HENRY A. DEWING, a citizen of the United States, and a resident of San Buenaventura,

in the county of Venturaand State of California, have invented a new and Improved Indicator for Type-Writing Machines, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved indicator for typewriting machines, arranged to indicate the exact point at which the character to be struck will appear on the paper, at the same time indicating the exact line above the scale at which the type will strike, thus permitting the operator to quickly manipulate thetypewriting machine in filling in blanks, writing on ruled paper, and correcting errors or omissions, and when the carriage is raised the operator can see at a glance at what point the next character will appear. I

The invention consists of novel featuresand parts and combinations of the same, which will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is repre sented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a perspective view of the improvement as applied to the Remingtontypewriting machine, thecarriage of the latter being shown in a raised position;

Fig. 2 is a transverse section of the same, showing the carriage in a lowermost active position; Fig. 3 is a perspective view of the improvement, and, Fig.4 is a front elevation of the improvement as applied.

The pointer A of the indicator is fulcrumed at A on a lever B pivoted at B on a bracketC fastened by a screw D screwing into the frame E of the typewriting machine at the back thereof, as plainly indicated in Fig. 2, the said screw D passing through an elongated slot C in the bracket 0, to permit of adjusting the bracket to bring the pointer A in proper relation to the impression point on the platen E held on the carriage The screw D is preferably one of the two screwsforfastening the escapement support of the typewriting machine in position.-

The-pointer A is provided at its heel orfulcrum end with an offset A pivotally connected by an L-shaped link F with the upright member C of the bracket C, and the heel of the lever B is provided with an offset 13 engaged by one end of a coiled spring G attached at its other end to the bracket 0. N ow by thearrangement described, the spring G tends to hold the lever B and the pointer A in an uppermost position, as illustrated in Figs. 1 and 3, and allows it to' swing the lever B and the pointer'A downward to the inactive position illustrated in Fig. 2.- For the purpose mentioned, the

. Y lever is provided at one side with an offset B adapted to be engaged by the platen scale E held on the carriage E when the latter is swung, downward. Now, when the lever'B is swung downward on swinging the carriage E into a lowermost active position, then the link F imparts a swinging motion to the pointer A, so as to move the same into a longitudinal position, as indicated in. Fig. 2, whereby the pointer is moved comriage. When the carriage E is swung upward, then the spring G imparts an upward swinging motion to the lever B, and the link F imparts a swinging motion horn left to right tothe pointer A, so as .to bring the terminal thereof at the impression point,thus indicating the exact point'at which the character to be struck appear on the paper held on the platen E at th. time. It is evident that when the carriage E is swung downward the pointer A completely moves out of the way of the central paper guide E and the left hand paper guide E and the pointer is also out of the way of the type, to permit of manipulating the typewriting ma-- chine in the usual manner without danger of interference by the indicator.

It is expressly understood that the indicator only moves into an active position when the carriage E 'is swung into an open position.

From the foregoing it will be seen that the pointer indicates the exact point at which the character to be is raised, and the pointer also indicates'the exact line above the scale at which the character will strike. Say, frr instance, it is desired to write on ruled paper:

to write to the edge of 'the platen scale and then turn the platen two spaces. A typewriting machine provided with the indicator requires turning of the platen until the line on which it is desired to write appears at the place indicated by the pointer, as will be readily understood by reference to Fig. 4. If a letter in a word has not been struck then the carriage can be readily shifted to move the pointer A opposite the vacant space on which the letter should appear. Thus, if in the word 'soon one of the first 'o had not been struck it is only necessary to bring the space between W o? to the placeindicatedby llienpein erA', after which the carriage is lowered'and the letter ol is struck; i v. Th pointer A moves completely out of the way of the-central paper guide E, but when the carriage is in a certain position a downward motion of the carriage will sometimes cause the pointer A to catch under the left-hand paperguide E especially ifthe guide is sprung up, which will necessitate the removal of' the lower portion of the paper guide, although it maybe possible in such cases to bend either the pointer or guide to overcome such interference.

pletely out of the path of any of the parts on the car- 7 struck will appear on the paper whenever the carriage The ofiset B? projects from the left-hand edge of the Now,- it will-be necessary to adjustthe line on which level a sufiicient distance to keep the pointer mechanis m from flying off the platenscale E when the carsufiicient height to throw the pointer mechanism"enj tir'ely free of the platen and carriage, thus leaving the only point of contact, when the carriage is down, be-

tween the upturned edge of the offset B and the platen scale E.

From the foregoing it will be seen that the indicator is very useful when using the typewriting machine for.

filling in blanks, writing on ruled paper, and correcting errors or omissions, and when the carriage is raised, the operator at a glance knows exactly where the next character will strike.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. The combination with the typewriter, of an indicator comprising a lever mounted to swing towards and from the platen, a spring acting normally tomove the lever to wards the platen, a pointer fulcrumed on the lever for swinging movement at right angles to the swinging movement of the lever, and means whereby the swinging of the lever, against thefresistance of the spring will swing said pointer on its fulcrum. I Y v 2 An indicator for typewriting machines, comprising a fixed bracket, a lever hinged thereto, a, spring connecting the lever and the bracket, a pointer fulcrumed on the-lever,

one end of said pointer being provided with antindlcntor and a link connecting the other enl and the bracket.

In testimony whereof I have signed my name to this specification in. the presence of two subscribingwitnesses. 35

, r'rnNR'r A. DEWING. Witnesses:

CLAr- G. KNOX, Don G. BOWKER. 

